A sample of calcium contains 0.025 moles how many atoms are in this sample

A piston contains 5.00 L of gas at a pressure of 101 kPa. The piston is compressed until the gas occupies 2.00 L of space. What is the new pressure of gas inside the piston?

At 1 atm, how much energy is required to heat 39.0 g of h2o (s at - 24.0 °c to h2o (g at 121.0 °c?

according to the law of conservation of, the number of atoms in the products of a chemical and equation must be balanced with the number of atoms in the reactants

The energy in gasoline is called A thermal energy B potential energy C kinetic energy D magnetic energy

Which transformation requires a complete meltdown of the rock into magma?

The electron configuration 1s22s22p63s23p6 represents which noble gas?

What feature distinguishes a neutral atom from an ion

What is urine made of?

How many grams of F - must be added to a cylindrical water reservoir having a diameter of 2.02 * 102 m and a depth of 87.32 m?

How do you know when it's the same element?